<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        img {
            display:inline-block;
            max-width: 500px;
            height: auto;
            border: 2px dashed maroon;
            margin: 10px;
        }
        video {
            height: 300px;
            width: 300px;
        }
        iframe{
            display: inline-block;
            width: 500px;
            height: 500px;
        }
    </style>
</head>
<body>
<form name="upload" method="POST" enctype="multipart/form-data" action="#">
    <input type="file" name="myfile" class="myFile" multiple style="display: none" accept="*/*">
    <input type="button" name="submit" value="上传" class="submit">
</form>
<script src="./index.js"></script>
</body>
</html>

